package JavaEE初阶.Multi;

import java.util.concurrent.Semaphore;

public class Demo07 {
    private static int sum = 0;
    public static void main(String[] args) throws InterruptedException {
        Semaphore semaphore = new Semaphore(1);
        Thread t1 = new Thread(() -> {
            for(int i = 0;i  < 10000; i++){
                try {
                    semaphore.acquire();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                sum++;
                semaphore.release();
            }
        });
        Thread t2 = new Thread(() -> {
            for(int i = 0; i < 10000; i++){
                try {
                    semaphore.acquire();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                sum++;
                semaphore.release();
            }
        });
        t1.start();
        t2.start();
        t1.join();
        t2.join();

        System.out.println(sum);
    }
}
